{"title":"Linear output principle of fiber optic temperature sensor","authors":"Xing Tian","doi":"10.1117/12.2294842","DOIUrl":"https://doi.org/10.1117/12.2294842","url":null,"abstract":"It is known that the photoluminescence (PL) spectrum of the optical fiber temperature sensor, which uses the GaAs / GaAlAs double-heterostructure semiconductor as a transducer, is determined uniquely by the temperature of the transducer, and the changed range of the PL peak wavelengths is approximately from 0. 860 14 m to 0. 910 /2, m for the temperature range of 0-150 C, and the output signals of the sensor are nonlinear[ 1] .","PeriodicalId":322470,"journal":{"name":"Marketplace for Industrial Lasers","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1990-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129346003","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Computerized measurement of synthetic characteristics of microchannel plates","authors":"Yinghui Li","doi":"10.1117/12.2294713","DOIUrl":"https://doi.org/10.1117/12.2294713","url":null,"abstract":"A computerized measurement has been developed to assess the characteristics of microchannel plate (MCP). This paper discusses the microcomputer hardware and software techniques used in the system in circuit control, signal acquization and software package, etc.. Some measuring results have been presented.","PeriodicalId":322470,"journal":{"name":"Marketplace for Industrial Lasers","volume":"1230 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1990-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130827546","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"System for spectrum parattet detection and continuous Tong record","authors":"Xiao-zheng Zhu","doi":"10.1117/12.2294716","DOIUrl":"https://doi.org/10.1117/12.2294716","url":null,"abstract":"A system, which has been set up, can efficiently collect spectrum information in an intelligent mode. It comprises common spectrometer,a solid-state photodiode self-scanuing array detector, amplifier,a new data acquisition interface card and RAT microlomputer.System block diagram is shown in Fig.1. The spectrometer is Ebert-Fastie grating dispersion apparatus, in which slit is 2.5 mm tong and 25 micron wide. The detector contains a photodiode array sensor, a scanning moving out circuit and a preamplifier.The array sensor is located at the position of the first order of spectrum and its spectral range is 200-1100 nm.On the sensor there are 512 photodiode pixels aligned, every one has dimensions of 2.5 m m by 25 micron, total active area is 2.5 mm by 12.5 nun. Pixels' maximal spectral response is near by 580 nm wave length. Dynamic range of signal may reach 103-104, By cooling the detector it may he higher. As array sensor is possessed of some advantages , such as less size, convenience , good spectrum outline translation, it gets more and more application. On array, spectral signals are accepted in parallel multichannel and turned into electrical signals, then detector moves them out in series. Aa soon as signal of a pixel is carried away the pixel will begin next integrating of optical signal. Under control of microcomputer the signals out from sensor are amplified and then digitized by acquisition subsystem in real-time.","PeriodicalId":322470,"journal":{"name":"Marketplace for Industrial Lasers","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1990-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125515596","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"A research on ultrafast scanner","authors":"Ruilin Ma","doi":"10.1117/12.2294689","DOIUrl":"https://doi.org/10.1117/12.2294689","url":null,"abstract":"A research on ultrafast scanner in ps range is reported in this paper. It is based upon the self-induced deflection by passing the laser pulses through a semiconductor wedge. Its principle and computer simulation are presented. Using 'Inclined Surface Fourier Transform 'to consider deflection, diffraction and attenuation synthetically, computation results indicate that the attenuation worsens seriously the performances of this type of scanner. Effectual correction can be obtained by adding two special attenuators on both sides of the wedge.","PeriodicalId":322470,"journal":{"name":"Marketplace for Industrial Lasers","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1990-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123394263","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Measurement of magneto-optical constants of RE-TM films by frequency doubling method","authors":"Jiuyao Tang","doi":"10.1117/12.2294872","DOIUrl":"https://doi.org/10.1117/12.2294872","url":null,"abstract":"Frequency doubling method has been applied to measure polar Kerr rotation and ellipticity. Magneto -optical (MO) constants of some GdCo and TbFeCo films were obtained. The optical performance of A1N TbFeCo / glass bilayer structure calculated with the measured MO constants agrees quite well with the experimental results.","PeriodicalId":322470,"journal":{"name":"Marketplace for Industrial Lasers","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1990-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121541348","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Pointwise automatic analysis of speckle photographs","authors":"Junjiang Zhang","doi":"10.1117/12.2294857","DOIUrl":"https://doi.org/10.1117/12.2294857","url":null,"abstract":"An automatic system for analyzing specklegrams point-by-point is described. A new method of evaluating Young's fringes is put forward based on making a TV camera to be able to scan horizontally and vertically. Tracking filtering and edge locating techniques are developed to acquire fringe data.?. Experiments show Young's fringes can be determined with the accuracy of 1% in spacing and 1 in orientation and accordingly the displacement can be found out with the accuracy of 1 it m in the range of 20 to 100 p m.","PeriodicalId":322470,"journal":{"name":"Marketplace for Industrial Lasers","volume":"20 5","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1990-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121014600","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"A focus on lightwave local area networks","authors":"Hsi-chiu Liu","doi":"10.1117/12.2294808","DOIUrl":"https://doi.org/10.1117/12.2294808","url":null,"abstract":"This paper focuses on lightwave technology used in local area networks (LANs). Lightwave technology is one method to appease the greater demands placed on LANs, both now and in the future. We consider some of the main effects this has in both existing and future LANs, also noting any problems and limitations along the way. There is a look at the LAN topologies that can be used for lightwave networks, and concurrency technique that can be used to tap into the vast array of bandwidth lightwave medium has to offer. We also examine the performance effects lightwave technology is giving us currently, and what to expect in the future.","PeriodicalId":322470,"journal":{"name":"Marketplace for Industrial Lasers","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1990-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121790323","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"A new construction of optical fiber probe","authors":"S. Dong","doi":"10.1117/12.2294826","DOIUrl":"https://doi.org/10.1117/12.2294826","url":null,"abstract":"A new construction of optical fiber probe is introduced. It has the advantages of insensitive to outer disturbances.","PeriodicalId":322470,"journal":{"name":"Marketplace for Industrial Lasers","volume":"110 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1990-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122710536","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Continuum band jointly generated by SFPM and SRS in a multimode fiber","authors":"S. Shen","doi":"10.1117/12.2294825","DOIUrl":"https://doi.org/10.1117/12.2294825","url":null,"abstract":"Stimulated four photon mixing (SFPM) and stimulated Raman scattering (SRS) are two third-order nonlinear effects with different mechanisms, occurring in intense light transmission process in fibers. Their common feature is that they are able to convert coherent pump light at a certain frequency into new coherent light at different frequencies. Since threshold power for SFPM and SRS in fibers is much lower than in bulk material, it is recognized that SFPM and SRS in fibers are effective approaches to the frequency tuning of laser radiation. Incomparison with SRS, the advantage of SFPM is that it is able to achieve frequency up- conversion as well as down-conversion, but the problem is that SFPM process requires a harsher phase matching condition. Therefore, it is rather difficult to generate a Stokes-anti -Stokes (S-AS) pair experimentally, and even more difficult to generate multiple pairs. So far as we know, only one or two, at most three S-AS line-pairs were reported to be observed simultaneously[ 1] . Recently, through many experiments, we have simultaneously recorded six S-AS line-pairs of SFPM for the first time. It is specially worth notice that the six Stokes lines of SFPM act as new \"pump radiation\" and initiate the multi-order Stokes lines of SRS. All these lines, overlapping the cascade Stokes lines of SRS directly generated by the initial pump radiation, form a continuum band in the spectral range of 540-640nm.","PeriodicalId":322470,"journal":{"name":"Marketplace for Industrial Lasers","volume":"315 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1990-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122883174","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Real-time all-optical associative memory","authors":"T. Lu","doi":"10.1117/12.2294871","DOIUrl":"https://doi.org/10.1117/12.2294871","url":null,"abstract":"We have proposed and demonstrated a real-time all-optical associative memory system which combines Fe:LiNbO3 crystal holographic memory element and phase conjugate mirror (PCM). The PCM was produced by BaTiO3 crystal self-pumped phase conjugate whose reflectivity is enhanced by two-wave mixing. Analysis and preliminary experiments are given.","PeriodicalId":322470,"journal":{"name":"Marketplace for Industrial Lasers","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1990-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127825412","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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